class_docstr: An error from vips.
  
  Attributes:
      message (str): a high-level description of the error
      detail (str): a string with some detailed diagnostics
code: def __str__(self):
      return "{0}\n  {1}".format(self.message, self.detail)
  
file_path: pyvips/pyvips/error.py
imports: import sys
  import logging
  from pyvips import ffi, vips_lib, glib_lib
label_desc: Use image node_id 2 for calling the Error obj's underlying member method code with example usage: obj.__str__() and returns: str